![]() ![]() This mixed practice introduces (numerically small) inconsistencies and superfluous conversions between variables. Present oceanographic practice in the Gibbs SeaWater Oceanographic Toolbox uses a polynomial expression for specific volume (and enthalpy) in terms of Conservative Temperature (as well as of Absolute Salinity and pressure), whereas the relationship between in situ temperature and Conservative Temperature is based on the Gibbs function. From this thermodynamic potential, all the equilibrium thermodynamic properties of seawater can be derived, just as all these thermodynamic properties can be found from the TEOS-10 Gibbs function (which is a function of in situ temperature, Absolute Salinity and pressure). A thermodynamic potential is found for seawater as a function of Conservative Temperature, Absolute Salinity and pressure. ![]()
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